Wrench.



H. F. W. LIESEMEYER. WRENCH. APPLICATION men JULY 23. m5.

1,191,325. v Patented July 18, 1916.

JYVUMO/D sermon.

HENRY F. W. LIESEIVIEYER, F OWENSVILLE, MISSOURI.

- WRENCH.

Specification of Letters Patent.

Patented July 18, ieic.

Application filed July 23,- 1915. Serial N0.41,593.

T 0 all whom it may concern:

Be it known that I, HENRY F. TV. LIESE- MEYER, a citizen of the United States, residing at Owensville, in the county of Gaseonade, State of Missouri, have invented certain new and useful Improvements in Wrenches;

and I do hereby declare the following to be a full, clear, and eXactdescription of-the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in wrenches/ One object of the invention -is to provide a simple and cheap wrench by means of which a firm grip can be gotten on an object to be turned.

Another object is to provide a device of this character which is formed of few and simple parts and which can be operated in an easy and elfective manner.

Other objects and advantages willbe apparent from the following description when taken in connection with the accompanying drawing.

In the drawing: Figure. 1 is a side elevation of a wrench made in accordance with my invention, Fig. 2 is an edge view thereof, Fig. 3 is a view showing the movable jaw in open position, one of the said plates being partly broken away, and Fig. 4 is a View showing the wrench in closed position.

Referring particularly to the accompanying drawing, 10 represents the shank of the wrench on the outer end of which is formed the rigid or stationary jaw 11. Pivotally connected to the other end of the shank is a link block 12 to the center of which is pivotally connected one end of a handle lever 13. Pivotally connected to the other end of the block is the end of a shorter shank 14C carrying on its remaining end the j aw member 15. A pair of triangular plates 16 are disposed on opposite sides of themembers just described and have their apexes pivotally connected on opposite sides ofthe handle lever 13 by means of the common pivot pin 17. Onev of the base corners of each of the triangular plates is disposed on the side of the shank 10 and pivotally connected to the shank by means of a common pivot pin 18. ,The remaining angular corners of the plates are disposed on the opposite sides of shank 14:, adjacent the jaw 15 and pivotally connected thereto by the pin 19. In the lever 13, at the point where the pin 17 passes therethroug'h, there is formed an elongated longitudinal slot 20.

In Fig. l is shown the normal position of the wrench, and when the lever 13 is swung rearwardly the parts will assume the positions shown in Fig. 3, whereby the movable jaw willbe moved a greater distance from the stationary jaw. When the lever is swung 1n the opposite direction, the movable jaw Wlll be moved up close to the stationary jaw,

. as clearly seen in Fig. 4. Thus the jaws can be moved to grip work of different dimensions, and by bearing on the lever when the work is to be turned, the movable jaw will bear firmly against the work. Upon releasing the lever, the movable jaw will be free of the work, and the'wrench can be turned to get anew grip thereon.

What is claimed is:

A wrench comprising a shank having a jaw on the outer end thereof, a movable jaw disposed to move toward and from the first named jaw and carrying a shank, a link having its ends pivoted directly to the inner ends of the shanks, a handle lever having one end pivoted to the central portion of the llnk, and a substantially triangular plate having two of its corners pivoted directly to the shanks intermediate their ends, the third corner of the plate being pivotally and slidably connected to the handle lever intermediate its ends.

In testimony whereof, I aflix my signature, in the presence of two witnesses.

HENnYriw. LIESEMEYER.

Witnesses:

THEODORE A. NULLMEYER, HENRY C. KoTTwITz;

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

